[PATCH rdma-next 10/10] xprtrdma: Enable Relaxed Ordering

Leon Romanovsky
2021-04-05T05:24:58Z

From: Avihai Horon <avihaih@nvidia.com>

Enable Relaxed Ordering for xprtrdma.

Relaxed Ordering is an optional access flag and as such, it is ignored
by vendors that don't support it.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
net/sunrpc/xprtrdma/frwr_ops.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index cfbdd197cdfe..f9334c0a1a13 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -135,7 +135,8 @@ int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr)
struct ib_mr *frmr;
int rc;

- frmr = ib_alloc_mr(ep->re_pd, ep->re_mrtype, depth, 0);
+ frmr = ib_alloc_mr(ep->re_pd, ep->re_mrtype, depth,
+ IB_ACCESS_RELAXED_ORDERING);
if (IS_ERR(frmr))
goto out_mr_err;

@@ -339,9 +340,10 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
reg_wr = &mr->frwr.fr_regwr;
reg_wr->mr = ibmr;
reg_wr->key = ibmr->rkey;
- reg_wr->access = writing ?
- IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
- IB_ACCESS_REMOTE_READ;
+ reg_wr->access =
+ (writing ? IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
+ IB_ACCESS_REMOTE_READ) |
+ IB_ACCESS_RELAXED_ORDERING;

mr->mr_handle = ibmr->rkey;
mr->mr_length = ibmr->length;
--
2.30.2